Preparation method of nano thermite energetic ink

The invention discloses a preparation method of nano aluminum/porous copper oxide ink. The method is divided into two stages, in the first stage, Cu (NO3) 2. H2O and urea are adopted to obtain a copper oxide precursor, then the copper oxide precursor is subjected to high-temperature calcination in a muffle furnace to obtain flaky porous copper oxide, and then the porous copper oxide pCuO and nano aluminum powder nAl are physically mixed to obtain the nAl/pCuO energetic composite material. And the second stage is an ink preparation stage, specifically, hydroxypropyl methyl cellulose HPMC is fully stirred in DMF to be completely dissolved, then the obtained nAl/pCuO energetic composite material is added into an HPMC solution, and the nAl/pCuO/HPMC energetic ink is obtained after magnetic stirring and thermal gelation. According to the energetic ink prepared by the invention, the contact area between the nano aluminum powder and the copper oxide is increased, and the energetic ink has a promoting effect on impro